Sound-reproducing machine



' Nov. 30,1926; 1,609,031

R; M. MILLER SOUND REPRODUCING MACHINE Filed Oct. 25, 1922 6 t t 1 I 1 76i 1,

WITNESSES.

INVENTOR:

6. a j fioberi M21111; fl i Nov. 30 1926.

WITNESSES:

SOUND REPRODUC I NG MACHINE Filed Oct. 25, 1922 6 Sheets-Sheet '2 v 55 f; I. Q

1 917 JNVENTOR;

Z5 fioberf MMilZar,

' ATTORNEYS.

Nov. 30, 1926. 1,609,031

R. M. MILLER SOUND REPRODUCING MACHINE Filed Oct. 1922' i 6 Sheets-Sheet 4 Fzcillz 111mg" 9 :16 Z :llliiii I; y 90 FIG; 17

* ZAE 17 FIG: K'

9 Z5 5 A128 1 32 7 2 I I Z /L I 4 M 4m Y1 Q x/ 1] 1| i 4 zz/ 1 g3! ITNESSES: v INVENTOR:

-Boberf M Miler,

- ATTORNEYS.

Nov. 30 1926. 1,609,031

R. M. MILLER SOUND REPRODUCING MACHINE iled Oct. 25, 192

6 Sheets-Sh'eet 5 65 WITNESSES; INVENTOR- 01961"? M 1mm;

y W WTTORNEYS.

Nov. 30,1926. 1,609,031

R. M. MELLER SOUND REPRODUCING MACHI piled 1922 6 Sheets-Shet 6 .FIG': XIZZ.

WITNESSES IN V EN TOR:

2d Robarz" M Mule/2" ATTORNEYS.

Patented Nov. 30, 1926.

PATENT OFFICE.

ROBERT M. MILLER, 01 PHILADELPHIA, IENNSYLVANIA.

SOUND-REPRODUCING MACHINE.

Application filed October 25, 1922.

which travels coincidentally with the tonearm, and a mechanism actuated when the l follower comes to rest as at the conclusion of a sound reproducing performance to arrest operation of the machine.

Another object of the invention is to pro-- vide a repeating mechanism coordinated it with a stopping mechanism of the type above described in such wise asto cause repeated performances beginning at any predetermined point in the length of the record groove and to automatically stop the mecha- 50 nism at the conclusion of the last repetition.

Another object of the invention is to provide a braking mechanism for sound reproduring machines, which consists of a movable support for the tone-arm and means operable by such movement of the support occurring when the weight of the tone-arm is rested thereon to co-operate with the governor mechanism in such wise I as to arrest further operation of the machine.

Another object of the invention is to provide improvements in devices of the character stated for positively and accurately lifting and swinging the tone-arm and for redepositing the stylus at the selected point of repetition on the record when the mechanism is set for replaying, or to convey the tonearm to its support when the mechanism operates to stop the machine.

The inventive concept involved in the performance of the certain objects outlined above is capable of receiving a variety of mechanical expressions, one of which for the purpose of illustrating the invention is shown in the accompanying.drawings, but it is to be expressly understood that such drawings are for the purpose of illustrationonly and are not designed to define the liriiits of the invention, reference being had to theap pended claimsdfor this purpose.

' view in top'plan' of a. soundreproducinglmachine illustrating the embodiment therein of my invention.

IIis a viewlinltoplplan of thefinechamm. arm invention illustrating its-relation Serial No. 596,829.

to certain cooperating parts of the spring motor for rotating the turn-table of a sound reproducing machine.

Fig. III is a detail view in plan to an enlarged scale, of portions of the tone-arm .elerating and swinging mechanism, and a tripping mechanism cooperative therewith, and showing the parts in a position assuined during playing of the record.

Fig. IV is a fragmentary illustration in side elevation ofthe tone arm elevating and swinging mechanism as viewed in the direction of the arrows IVIV in Fig. II.

Fig. V is a detail view in section taken on the line VV of Figure III.

Fig. V1 is a view in section taken on the line VIVI of Figure III, and showing the parts in a position assumed during playing of the record.

Fig. VII is a view similar to the immediate preceding figure showing certain parts in the act of being tripped at the conclusion of a second reproducing performance.

-Fig. VIII is a view similar to Figure VI but showing the parts in a position assumed while the machine is inoperative.

F IX is a view in section taken on the line IX-IX of Figure III.

Fig. X is a detailview of a groove follower forming part of the tripping mechanism for the automatic stop.

Fig. X1 is a fragmentary View in vertical elevation of the tone-arm support and braking mechanism operable thereby. r

Fig. XII is a fragmentary illustration in plan of the parts includedvin the braking device and the tone-arm elevating and swinging mechanism. as viewed in the direction of the arrows XIIXII in Fig. XL.

Fig. XIII is a view in perspective of the repeating mechanism and manual stop.

Fig. XIV is a detail view of a movable stop forming part of the repeating mechanism. V

Fig. XV is a detail view of a'portion of the toneearm swinging means H EigQXVI, is a fragmentary perspective view showingcertain parts of ,a trip plate 1nechanisin, hereinafter fully described; and, In the accompanying drawings, Fig. I is, a

Fig. XVII, is a detail plan view of the control means for the repeating mechanism,

"shown to a larger scaleythanin Fig. II, for

thefxsake of clearness.

'VVith reference to the drawings, particullarlyYFi'gure I, there is indicated ati'IO a which include the tone-arm 11 shown as be longing to the type designed to be elevated and swung from a common point; and 12 indicates the turn-table tor supporting the record and which is driven by virtue of its support upon and connection to th central spindle 13 forming part the spring motor indicated compreheusivcly at let in Fig are H.

Beginning with a description of the automatic stop mechanism, 15 indicates a horizontal plate forming); a support for the parts and located directly above the spring motor l t and within the cabinet 10, The plate 15 is formed with oppositely disposed upstanding ears 16 forming end supports tor a shaft 17. the right hand end of which as best seen in Figure IV, is journallec in a block 18., and atits opposite end in a bearing 19. A beveled gear 20 is mounted upon one end of the shaft 1? for ngagement with a beveled gear 21 carried upon an arbor forming part of the motor train of gears. Fast on the shaft 17 is a sleeve 22 having one end threaded as indicated at 23 to provide a convoluted groove. The opposite end of the sleeve is for .ied with an end ratchet face cooperating with a complementary ratchet face formed upon a sliding clutch member 25 embracing the shaft 1?, said collar having an eccen ric cam 26 formed therewiai for a purpose CO be presently described. An annular ridge 27 is forn'ied upon the face of the cam 26 concentric with its center 01'' ro tation and said ridge is cut away to form an inclined depression 28. The block 18 eccentrically and axially channeled to house a pin 29 the exposed end of which engages the face of the :27, and axially adjustable in extended position by means ot a screw 30 threaded into the adjacent upstanding car 16 of the support" plate 15.

A mechanism for elevatand swinging the tone arm includes :1 ill shown l the upper iided in end of a Vil'iLlCtll be "ings 33 "for both n'iovement. wliereliiy said plate position to be cng 'agged and elevated by the am during rotation thereof. also carries a horizontal 1.; by the cam 26 so rotate movement or the rod throusrh a he XV li ivingr i ansinitted L P opposite I .upport- .-or vertical rod. 3? rotatably he c therein, by a collar 59. The

upper end of the rod is appropriately connected, with interposition of a pivot point 3?, to thetone-arm ll'as indicated in Fig". I. The rod egzwes a slot f rmed plate a I X11 and I as which is swmgable with the tone-arm l1 and is adapted to cooperate both with a tripping and repeating mechanism now to be described.

The tripping mechanism comprises a lever plate 42 which is fulcrumed by ears 42 Fig. XVI upon a rod l2 with capacity for sliding movement, said rod being supported at its ends through the medium of ears as on the plate 15 aforementioned, one end of said plate 4-2 being extended beneath the threaded sleeve 22 and provided with an upward extension 4%, Figs. VIII and I'l -Ii which carries a dog or groove follower 415 the latter being pivotally mounted for vertical oscillation and having an edge 46 X which rides in the groove oi the threznled portion 23 'ot' the sleeve 22 and is retained therein by virtue of its own weight. The lever plate 4-2, as stated. is elidable along its support" rod 4-1. and such movement is coordinated with that of th tone-arm 11 by virtue of an upstanding pin 4-? carried by said lever plate 42, which pin engages the forked end or" an arm %8, said arm havii its opposite end pivoted upon a vertical pm at) around which a coiled spi' 50 is en:- braced and arranged in such wise as to u the arm 48 toward the right in Figure such movement being limited by eng oi said arm with an upstanding lu; formed upon the plate 4-1.

A plate 52 is mounted for vertical oscillation by virtue of its support through the medium of apertured cars 52 upon the rod 48 along one edge so to permit swiu movement of the opposite edge which ['21 :HF? a rod 53 disposed in parallel, relat on to the rod 43 and resting noon the ev at said plate may he iised by u iward move ment oil the plate 49 induced i a manner in: he described in any position of the latter duringits course of travel. The plate a proviced at one end with an overlie (ill extension 54 carrying a laterally or. -n pin having a notched end to on age similarly notched end of a ra-zli" which is carried by the before clutch member see Fig. a l. is torn'ied with an extension 5? as he's bv Fi relation to the thre at its oppo:-;itc end for an upstanding projection The d q or groove follower with laterally bent ti s the top e 0, g3ffl j3g at he position o itsco'o ne the o t the n arrangement shown Xi and X11 and comp: i i formed at its upper en'c. .ith a Saddle .1 in which the tone arm 11 loo igeoa otl said rodjis conveniently bifu'rcated "to rest upon a lever'163 si itably fulcrume'd an intermediate point, and'providediat its opposite end wit-ha brake 'sho e" 64, adapted to engage the disk 65 formingp'artof the goven vnor mechanism, indicated generally at 66, of the spring motor 14. The brake shoe 64 is normally heldout'of' engagement with the disk 65and the rodeo, whileit is retained in elevated position by means of a coil spring 67 located at the fulcrum and engaging the lever 63 in the manner shown in Fig. XI.

In the operation of this portion of the mechanism, while the same is functioning as an autotmatic stop rotation ofthe turntable 12 underthe influencejof'the spring motor 14: is initiated immediately'when the tone-arm 11 is lifted from the' saddle supportitll, Priorto the starting of the'motor 20 ber 25-is retained in clutched position by virtue of the pin 29 in its engagement with theface of the ridge 27. After'the tonearm- 11 has been lifted and the-'inoto'r l lreleased for driving, the first result of this act is to rotate the'threaded sleeve 22 carrying the clutch- 25 with it'u ntil the: pin'29 enters therecess'28 whereupon theflclutch member slips out and the clutch 25is held against further rotation by engagement ofthepin 56 withthe pin 55 positioning theparts for tripping as shownin Figure VI. The ,sty-

lus is now directed into thereoord groove and the tone-arm 11 s advanced in the usual way during the sound reproducing performance.

As an incident to "initial progression of the tonearm 11 from the position shownjin Fig. I, to bring thest'yl-us into the record grooveffor reproduction or playing pur pose, the arm 48 will be swung concurrently therewith or to the left end" as viewed in FigJII, themotion of which in turn is' communicated through the 111147 to the lever plate 42 upon which thefollower 45j is carfried so' that said follower will bebrougl'it engagement with the threaded portion 23 of the sleevej22. ,The

pit'eh'of the threaded portion 123 of the sleeve v 22 is intended to coincidesubstantially with "the pitch of'the record grooveso' that nevertiicalor oscillatory'movement'of thefollower edge 46; occurs other] than that] due to its travel along the threaded portion 231offtl1e into co-operative sleeve 22. However when tl 1e sound rethe record "which is concentric, no" further sleeve 22 continues to rotate. "As ares'i'ilt oftliis contingency, the edge 46 o't't'hefollower lgli, shown more clearly'inFigure X, is advanced causln-g the XtGIlSlOIl H to rise with the result that the lever plate l-2 through engagementwith' the rod 53"causes the plate 52 to rock upwards, this movement in turn being communicated to the extension 54 so as tocau'se the pin 55 to disengage thepin56, upon the release of which the clutch member 25 is slightly rot ate'd under the influence of a spring finger 68 which engages a pin 69 extending from the cam 26. The slight rotative movement'thus elfected causesthe clutch member 25 to be shifted toward engaging position with the clutch face 2e by virtue of the inclined depression 28 formed in the annular ridge 2'? which rides along the end of thepin 29. The

clutch member 25 is thus held in locking engagement with the sleeve 22 under the retaining influence of the pin 29 which con tunes to ride along the face of the ridge 2? during further rotative movement of said clutch meinber. The position of the parts at the inst'ant of release is shown in Figure VII. Asa result of such movement the first act of the cam 26 forming part of the clutch incinber 25, is to engage the plate 31' and elevate the tone-arm 11 through the medium ot. the connection described above.

Q v Imn1ediately following such movement the pin at is engaged'by the cam 26' and the rod 32 forming part of said connection is rotated to carry or swing the tone-arm 11 toward the initial position, such swinging movement continuing until the tone-arm 11 is brought above the saddle support 61, and clear of the record-whereupon said cam, by reason of its configuration allows the tone arm 11 to descend upon the saddle 61. The downward [movement ofthe rod occas oned when the tone arin I1 is rested on the saddle-61 causes thebrakemechanism 64, 65 to function in the mannerdescribed to arrest further opermen of the spring "motor 1% and consequently bring the turn -table 12 torest,

bringing the parts again to the position shown n Flgures' VIII and IX.

It Wlll be noted that during return move merit of the tonearm 11 in the ina'nner stated the arm 48, under theinfluence of the spring fiiO will retract the lever plate 42, and 'conseqtfentlyfhe follower 45, 3 to its initial fp'osit'ion'overthe smooth portion of the sleeve best 'undQPSiOOd by Fig, II. It wi ll' aljsolbenoted that the upward movenient ofjth'efplate 31 induced bythe cam 26in theinanner described causes theexten- "jsion 57 thereoftolift the bent finge 59 and 7..producing'jperforinance'is concluded 'anclthe thus "elevate the j follower 45 from engagestylus comes to rest in the last] groove of ersed.

tion in conjunction with the rigid type of tone-arm 11 having a universal joint to permit swinging and elevating from the same point, I may adapt my improvements to other types of tone-arms. Hence when I re fer to the tone-arm as being elevated and swung it is to be understood that I refer more particularly to the sound box or reproducing element which is the part that is to be elevated, displaced or transferred in order to control the sound reproducing performance.

The repeating mechanism comprises in its essentials a means to limit the extent of the outward or return movement of the tone-arm 11 and to position the stylus at any predetermined point upon the record without stopping the motor 14:, so that the following portion of the record groove may be again trav- Specifically, this mechanism comprises certain parts shown more clearly in Figures ll, XII, XIII and XIV, and com prises a horizontal rod 70 anchored at its ends between upset ears upon the plate for the support of a slide 71 having an opening 72 F XIV in its upper end for guidance by said rod and carrying a lateral pin 73 at its lower end for engagement by a stop in the form of a depending extension 7% of the aforementioned plate 4E1 which moves with the tonear1n 11. The slide 71 carries an upwardly extending pin 7 5 which is engaged within the forked end of a bell crank 76 pivoted upon the plate 15 and having its opposite end connected to one end of a. link 77, the opposite end of which is extended. toward one corner of the cabinet 10 and pivotally connected to an arm 7 8 forming part of the setting device, shown in Fig ures H, X111, and XVII.

The setting device includes a vertical sleeve is rotatably supported by vertically spaced ears 79 forming part of a bracket 80. The sleeve 78 protrudes above the top wall of the cabinet and is equipped with an operating member in the form of a knob 81, and a pointer 82 which is selectively registreble with graduations on a dial 88. The aforesaid arm 78 loosely mounted for independent rotation upon, the sleeve 78 through the medium of a supporting collar 7 8 and carries a spring pressed pawl 84;, the operating end of which engages the edge of the lowermost one of a1 pair of ratchet disks secured to said sleeve and formed with imidirectional teeth arranged in alternate circumterentially spaced relation for service as an escapement mechanism, which also includes a detent or detaining. finger 86 torming part M a member 87 with lateral ears 88 engaging a vertical guide rod 89, the terminals of the latter being secured in lugs of the bracket so that said detent finger may be elevated and lowered to alternately engage the dislrs Shand permit progressive step by step rotation of the sleeve 78'. The detent finger 86 is retained in normally lowered engagement with the lower disk by means of a spring 90 having its terminals connected respectively to the detent 86 and the lower end of the bracket 80; while said detent finger is adapted to be elevated by means 01" abell crank 91 fulcrumed upon said bracket 80 and having one end engaged beneath the upper ear 88 of the member 87 and its opposite end connected by means of a link 92 to an angled arm 93 which is pivoted upon the plate 15 and is provided at its free end with an upward extension 94 adapted to be engaged by the cam 26 during the course of its revolution.

A coil spring 95 encircles the sleeve 78 with one end connected to a pin 85 extend ing from the uppermost disk 85 and theother securely anchored in the bracket 80 so as to urge the toothed disks 85 in a direction counterclockwise, with respect to Figures IT and XIII, said disks being limited in such movement by the engagement of one of their teeth with the pawl 84. the motion of the plate 78 carrying said pawl being in turn limited through its connection to the slide 71 by the engagement of the latter with the end support of the rod 70. The lower disk 85 is provided with a notch 8 1" Figs. H anc XVTE which cooperates with the pawl 84 in such wise that when the sleeve 78 Figs. XIII and XVII is rotated in a clockwise direction, incidental to setting of the repeating mechanism, the plate 78 is carried with said sleeve, transmitting its motion through the connections 77 and 76 to the slide 71, causing the latter to travel along the horizontal rod 70 until an obstruction is met (as hereinafter described) otl'ering resistance sutticient to cause the pawl 84 to move away from the tooth or projection 8 1. The sleeve 78 may, however, be further rotated unti the teeth of the lower disk 85 are moved successively past the detent finger 86 to hold said sleeve in. any adjusted position. It may be here noted that the parts TS, 8 1; and 85, are shown in the normal inoperative position in Fig. II, and as relatively adjusted by Fig. Kill. The foregoing suggested obstruction to the movement of the slide 71 is, in the present instance, the depending extension 74, which, by engagement with the pin 73 in different positions of the tone arm 11 limits themovement of said slide.

In the operati nisn the tone I machine and brougi position on the rotai be either at the 'iing oi the stylus glOOVQ or at some point subsequent thereto-- to which position the stylus is intended to be retnrned'atter the compl l on of the 1 as vthe stylus has slaying mechaed to start the the operating member or knob 71 Fig. XIII is turned to the right in the manner described to shift the depending slide 81 XIV until thep'in 73 is engaged against the stop 7st on the arm il whereupon said slide remains in that position while the movement of the knob 81 is continued until the pointer 82 is brought opposite a numerical indication on the dial plate 83 corresponding to the number of times the record or selection is to be replayed. At the completion of the reproducing performance the tone-arm 11 is elevated and swung to return position by the mechanism already described. Howeverpbecause of the interposition of the slide 71, the tone-arm 11 is not permitted to clear the record, i. e., to return as far asthesupport saddle 61, but, upon engagement of the stop 74: with the pin/T3, said tone arm is held against further swinging movement because i of the fact that the striking of the slide 71 at a point so tar below the rod 70 causes said slide to bind against the rod 70.

The cam '26, in continued movement and after elevating and swinging, the tone arm 11 in the manner stated permits the stylus to descend upon the record at the selected position of repeat, and then continues the cycle of movement until the pin 56 reengages the pin to detain the clutch member 25 and causes the parts to assume the position shown in Figure VI. During rotation of the cam 26 in the manner stated the upward extension 94 is engaged and the arm SSshitted; transmitting motion through the link 92 and bell crank 91 (Fig. XIII) to elevate the detent finger 86 sutliciently to release the lower disk 85 but to engage the immediately following tooth of the upper disk 85, and upon return downward movement under the influence of the spring 90 after the cam 26 is. further rotated, to engage the next succeedingtooth t the lower dislrSh-thus checkingoii the first-rendition of-the series to be played.

This operation is repeated each time the desired record selection is replayed. and until the last tooth of the lower ratchet disk 85' is permitted to escape, whereupon the arm 78 is swung around, to the maximum extent transmitting its motion through the links '77 and 76 to the slide 71, and returning the latter to its endmost positionso that at the completion of the last rendition the tone-arm 11 is elevated and swung completely over to its stop position upon the support saddle 61 whichautomatically gravitates downwardly so as to arrest operation of the spring :motor 14-. v

The automatic stopping-mechanism is thus co-ordinated with the repeating mechanism so that atthe'conclusion of the last repetition. the automatic stopping mechanism is operated without the necessity of manual control of any kind to arrest motion of the turn table. i

It may be desirable at times to stop the machine before the end otaiiy selection or before the number of repetitionsfor which the repeating mechanism has been set are completed. For"instance if therepeating pointer 82 has been set to play six times and after two repetitions it is desired to conclude the'performance a manual means is provided to restore the repeating device to initial position and stop thennachine. The means whereby this is accomplished consists ota push rod 96 which is aiiially slidable'within the sleeve 78 and engages at its lower end upon a rock lever 97 piv-- oted to the bracket 80, said ,r oc k leveryal'so, co-operati'vely abutting beneath theslide 86, so that whensaid rod 96 is lowered by depressing a button formed on its upper pro truding'end, the detent finger 86 is elevated to a heightsniiicient to clear both toothed disks 85, whereupon the latter are returned to initial position under recoil Pot the spring 95, while the depending slidefzlrprevionsly set, is restofredgto its initial position at tliefend of the rod 70. lever 98 isfulcrumed in anysuitable manner upon a' stationary support 98 and one end is 'dispo'sed beneath the rock lever 97 while the .o'ppo- I site end is engagedbelow a vertically movable rod 99 having its upperend positioned to engage beneath the 'osci lliita'ble plate so that when the rod 96 is depressed inthe manner stated the lever 98 is rockedto en,

v'a'te the rod and thereby raise'the plate 52, causing 'tl'ie pin 55 to release the pin '56 and initiate action of the tone arm lifting and swinging"inecl anisin, in the manner previously described, to: g the to11e=arin 11 to i'tsposition over the support Gland then t o lo wer it uponitl latter togarre'st operation of the springi otor f' It will be apparent that the stop mechanism niay be manually actuatedlatany time as' 'during normal playing-of the record, that is, while the repeating mechanism is .unset by simply depressing the rod96 which will act imniediately to return the ,tone-arm 1 1 to rest positionon the saddle 61. f v

The threaded portion 23;of the sleeve '22 maybe cut so as to provide two or more threads, if desired; so that each thread'is'of a greater pitchthan in the case of asingle thread out to conforn wsiibst'antially 'to the pitch of the record groove. A multiple thread. arrangemeiit 'is'shown in'Figure X in which the continuity of a single tliread is indicated by a dotted line. a result when thetQne-arm l1 comes to restQa-nd' cbnv sequently the fo'll ower {15, the thread by r'e-asonof itslong pitch will act very quickly to raise the follower carrier i lsandthus very quickly stop themechanisin. In any event, that is, Whether the thread is out singly or in multiple, or whether the thread corresponds in pitch to the pitch of the sound-recording-groove of the record, it is to be noted that the bevel gear 21 rotates much slower than the turn table 12, and that the stylus will be progressed by "the record groove at such a rate that the follower may slip over the threads during its travel along the threaded portion. Hence any difference in the pitch of the sound groove in different records will have no tendency to cause undesired actuation of the follower 45, even if the sound groove of a particular record should be of minimum pitch, the rate of progression of the stylus being always greater than the rate of longitudinal advance of any point on the threaded portion 23.

Having thus described my invention, 1 claim:

1. The combination in a sound reproducing machine including the tone-arm and record turning mechanism, of a rotatable member having a convoluted groove, a follower operable in the groove and adapted for selective redeposit, means actuable when the follower completes its predetermined travel to elevate and return the tone-arm to initial position, and means operable by such movement of the tone-arm to return the follower to initial position.

2. The combination in a sound reproducing machine including the tone-arm and record turning mechanism, of a rotatable member, a second rotatable member adapted to be clutched with the first, means operable when the tone-arm comes to rest on the record to clutch said members, and means operable by the second member to elevate and return the tone-arm to initial position.

3. The combination in a sound reproducing machine including the tone-arm and record turning mechanism, of a rotatable memher having a convoluted groove, a follower traveling coincidentally with the tone-arm and operating in the groove, a second rotatable member adapted to be clutched with the first, means operable when the follower comes to rest to clutch said members, and means operable by said rotatable member to swing the tone-arm to one side.

i. The combination in a sound reproducing machine including the tone-arm and record turning mechanism, of a rotatable cam, a rotatable member having a convoluted groove, a tripping means traveling coincidentally with the tone-arm and operable in the groove, means operable by the tripping means when the same comes to rest to clutch the cam with said rotatable member, and means operable upon rotation of the cam to elevate the tone-arm and swing the same to one side of the record.

5. The combination in a sound reproducing machine. including the tone-arm and record turning mechanism, of a member driven by the record turning mechanism and having a convoluted groove, a follower traveling coincidentally with the tone-arm and operating in the groove, a cam adapted to be clutched to the member, means operable when the follower comes to rest to clutch the cam to said member, a cam engaged member to elevate the tone-arm and swing the same to one side, an extension of said cam engaged member for ifting the follower from the groove, and means operable upon movement of the tone-arm to return the fol-- lower to initial position.

The combination in a sound if )lfi(l jing machine including the tone-aimv anal r rc-l'd turning mechanism, of a member operated by the'record turning mechanism hava helical groove, a carrier movable ally of said member, a follower supported upon the carrier to operate in the groove,

means operable by movement of the tonearm and engaging the carrier to move the same coincidentally therewith, and means tripped by the follower when the carri r comes to rest to elevate the tone-arm and swing the same to one side of the record.

7. The combination in a sound reproducrecord turning mechanism, of a rotatable member having a helical groove, a carrier movable axially of said member, a tripping follower supported upon the carrie and operating in the groove, a movable member located contiguously to the path of movement of the carrier so as to be engaged by the carrier in any position of the latter in its course of travel, a vertically movable means to elevate and swing the tone-arm to one side, and release means carried by the aforesaid movable member to trip said tonearm moving means.

'8. The combination in a sound rcproduw ing machine including the tone-arm and record turning mechanism, of a rotatabii member having a helical groove, a rod di posed in contiguous relation thereto, a c rier mounted to slide upon the rod, a tri ping follower supported upon the carrier and operating in the groove, a plate disposed contiguously to the rotatable member and adapted to be engaged by the carrier upon rocking n'iovement thereof at any position in its course of travel, vertically movable means adapted'to elevate and swing the tonearm to one side, and means carried by the aforesaid plate to release said tone-arm elevating means to permit actuation thereoff.

9. The combination in a sound reproducing machine including the tone-arm, of a cam, a rod, a plate carried by the rod and engageable by the cam to shift the rod axially, a connection from said rod to the tonearm to lift the latter upon such axial move ing mechanism including the tone-arm and ment, and a pin carried by the rod engageable by the cam to rotate said rod, said connection being operable upon said rotation of the rod to swing the tone-arm.

10. The combination in a sound reproducing machine including the tone-arm and record turning mechanism, of a pair of cooperative clutch elements one of which is driven by the record turning mechanism and the other adapted for clutching movement, means operable after partial rotation of said elements in unison at the beginning of a sound reproducing performance to disconnect the movable clutch member, a trip means to hold the latter against further movement, means operable automatically at the conclusion of a sound reproducing performance to release said movable member, and means operable by the latter to elevate and return the tone-arm to initial position.

11. The combination in a sound reproducing machine including the tone-arm and record turning mechanism, of a rotary element adapted to be connected to the record turning mechanism and mounted for lateral clutching movement, a concentric ridge forming part of said element and having a depression, a pin normally resting against the ridge to retain said element in clutched position, whereby said element may be partially rotated at the beginning of a sound reproducing performance to permit entry of the pin into the recess and consequent declutching of said element, a tripping means to retainsaid element declutched and against further rotation, means operable automatically at the conclusion of the sound reproducing performance to trip said retaining means to clutch and permit rotation of said element, and means operable by the latter to elevate and return the tone-arm to initial position.

12. The combination in a sound reproduc' ing machine including the tone-arm and record turning mechanism, of a rotating member having a convoluted groove and a clutch face, a follower operating in the groove, a carrier movable axially of the member and supporting the follower, means connecting the carrier to the tone-arm for coincident travel, a complementary clutch member, a plate disposed above the carrier and adapted to be tripped by the latter in any of its shifted positions, means carried by the plate to retain the complementary clutch member against rotation-during rotation of the threaded member, said follower being operable when at rest to elevate the carrier and trip theplate to thereby release the complementary clutch member for clutching engagement with the rotating threaded member, and means operable by said complementary clutch member to elevate and return the tone-arm and carrier to initial positions.

13. In a sound reproducing machine the combination withn'ieans for elevating and returning the tone-arm, of an adjustable abutment to limit degree of return movement of the tone-arm to replay a selected portion oi the record, and means operable at the conclusion of the performance to withdraw the abutment and permit return of the tonearm to rest position.

14. In a sound reproducing machine including means to elevate and return the tonearm, the combination of an adjustable abut- 15. In a sound reproducing machine including means to elevate and return the tone-arm, the combination of an adjustable abutment, means carried by the tone-arm engageable by the abutment to limit movement of the latter, and a setting mechanism for shifting the abutment and operable upon engagement of said abutment with said tone-arm carrying means to permit successlve repetitions of the sound reproducing performance and upon the conclusion of the lastrepetition to withdraw said abutment to permit return of the tone-arm to initial position.

16. In a sound reproducing machine including means to elevate and return the tonearm to initial position, the combination of a stop member movable with the tone-arm, an adjustable abutment to engage the stop and limit degree of subsequent return movement of the tone-arm, an adjusting means operable to position the abutment in the manner stated, and an escapement mecha nism adapted to be set after the abutment has been shifted in the manner stated for a predetermined number of releasing movements, means operable at the conclusion of each repetition to release said escapement mechanism and operable at the conclusion of the last repetition to withdraw said abutment and permit return of the tone-arm to initial position.

17. In a sound reproducing machine, the combination of a stop member carried by the tonearm, an adjustable abutment to engage the stop member and by its assumed position to limit degree of subsequent return movement of the tonearm, a setting mechanism including a manually movable arm having connection to said abutment, an escapement mechanism including toothed disks and a co operating movable detent, a pawl carried by the arm and cooperating with a rounded projection carried by one disk whereby said disks may be manually rotated tb, move the arm and shift the abutment in the manner stated and upon the engagement of said abutment with the stop member to cause the rounded projection to disengage the pawl and permit further rotation of said disks will nit movingthe arm, and means coordihating the detent with the tone-arm returir ing means to permit return movement of the tone-arm the conclusion of the last repetition.

18. In a sound reproducing machine including the tone-arm, the combination of a rod, a slide having an opening in one end to receive the rod and depending therefrom, sa d slide upon engagement at its lower end \r1th the tone-arm having capacity to bind against the rod and function as a stop to limit movement of the tone-arm, and means coordinated with the tone-arm for engaging the slide at a point adjacent the rod to shift the same for the purpose of adjustment initially in determining the starting position of the stylus in repeating.

19. In a sound reproducing-machine the combination of the tone-arm, a rotary cam member, means operable by said cam to elevate and return the tone'arm to initial po sition at the conclusion of each sound reproducing performance, a replaying means limiting degree of return movement of the tone-arm and including an escapement mechanism having a movable detent adapted to limit the number of repetitions of the pertormance, and a member engageable by the cam to operate the detent and release the escapement mechanism at the conclusion of each repetition.

20. The combination in a sound reproducing machine including the tone-arm, of a rotary member to elevate and return the tone-arm to initial position, a tripping initial position, a trip means restraining said operating means against moven'ient, an adjustable abutment to limit degree oi return movement of the tone-arm, means to shift said abutment comprising a sleeve, an es- ('RPQIHOHC mechanism including disks carried by the sleeve, means operable by rotation of the disks to shift the abutnient, a detent mechanism cooperating with the disks, means actuating the detent mechanism to release the disks at the conclusion ot each sound reproducing performance, a rod slidable in said sleeve adapted to be manually depressed, and means operable upon depression of the rod to release said tripping means and permit return of the tonearm to initial position at any time prior to the conclusion of a sound reproducing performance.

In testimony whereof, I have hereunto signed my name at Philadelphia, Pennsylvania, this 23rd day of October, 1922.

ROBERT M. MILLER. 

